A dichroic or trichromatic transparent display apparatus through which a background view is seen comprises a transparent substrate, a hologram formed on a rear face of the transparent substrate, a dispersion liquid crystal device disposed in front of a front face of the transparent substrate, a light...http://www.google.fr/patents/US6166834?utm_source=gb-gplus-shareBrevet US6166834 - Display apparatus and method for forming hologram suitable for the display apparatus
Display apparatus and method for forming hologram suitable for the display ...
